Related to the generous Communist (7)
I believe the answer is:
kindred
'related' is the definition.
(similar in meaning)
'the generous communist' is the wordplay.
'the generous' becomes 'kind' (I've seen this before).
'communist' becomes 'red' (red can informally mean communist).
'kind'+'red'='KINDRED'
'to' is the link.
(Other definitions for kindred that I've seen before include "Relatives" , "Closely related" , "Family - similar" , "clan" , "Related by blood - having similar qualities" .)